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‡ SIGNET

 8550-1 Flow Transmitter

Monitor the Permanent Totalizer value.

Monitor the 4-20 mA Loop  output.

Monitor date for scheduled maintenance or date of last calibration.  (See
description in Calibrate Menu.)

Hysteresis

Time

Low Setpoint

Process

Hysteresis

Output active

Output inactive

Time

High Setpoint

Process

Flow

Flow 6.25 GPM

Total 1234567.8>

ENTER

VIEW menu

During normal operation, the ProcessPro displays the VIEW menu.

When using the CALIBRATE or OPTIONS menus, the ProcessPro will return to the VIEW menu if no activity
occurs for 10 minutes.

To select the item you want displayed, press the UP or DOWN arrow keys. The items will scroll in a
continuous loop. Changing the display selection does not interrupt system operations.

No key code is necessary to change display selection.

Output settings cannot be edited from the VIEW menu.

The Open collector output can be used as a switch that responds
when the flow rate moves above or below a setpoint, or it can be
used to generate a pulse that is relative to the flow volume or to
the flow rate.

Low

Output triggers when the flow rate is less than the setpoint.
The output will relax when the flow rate moves above the setpoint
plus the hysteresis value.

High

Output triggers when the flow rate is greater than the setpoint.
The output will relax when the flow rate drops below the setpoint
plus the hysteresis value.

Frequency

Output is a pulse stream that is based on the input flow sensor
signal.  Set for 1 (input frequency = output frequency).  Set for
even numbers (2, 4, 6, 8 . . . . 254 maximum) to scale output
frequency.

Pulse

Output is a pulse based on the volume of fluid that passes the
sensor.  Set any value from 0.0001 to 99999.

The output may be disabled (Off) if not used.

View Menu

Display

Description

0.0 GPM

Total: 12345678 >

Perm: 12345678

Gallons

Loop Output:

12.00 mA

Last CAL:

06-30-01

Monitor the flow rate and the resettable totalizer.   Press the RIGHT ARROW
key to reset the totalizer.  If the Reset is locked, you will need to enter the Key
Code first.  Lock or Unlock the totalizer in the OPTIONS menu.  This is the
permanent View display.

All of the displays below are temporary.  After ten minutes the display will return to the permanent display.

Summary of Contents for 8550-1

Page 1: ...rrent output 4 to 20 mA isolated fully adjustable and reversible Flow Flow 6 25 GPM Total 1234567 8 ENTER 3 8550 090 1 1 Installation ProcessPro transmitters are available in two styles panel mount and field mount The panel mount is supplied with the necessary hardware to install the transmitter This manual includes complete panel mounting instructions Field mounting requires one of two separate m...

Page 2: ...ection Wiring Removal Procedure 1 Press the orange terminal lever downward with a small screwdriver to open terminal jaws 2 When fully open remove wire from terminal 2 1 Terminals 5 and 6 Open collector Output A transistor output programmable see CALIBRATE menu as High or Low setpoint with adjustable hysteresis Volumetric pulse Frequency based on flow rate May be disabled Off if not used Terminals...

Page 3: ...Loop Input 4 20 mA Loop Input 4 20 mA Internal PLC Connection Connection to a PLC Recorder separate supply PLC or Recorder Loop Input 4 20 mA in Loop Input 4 20 mA in DC 12 24 V Power Supply Power Supply Example Two transmitters connected to PLC Recorder with separate power supply Transmitter 2 4 3 2 1 DC 12 24 V Power Supply Power Supply Transmitter 1 4 3 2 1 Transmitter Terminals 4 3 2 1 Sys Pwr...

Page 4: ...lse that is relative to the flow volume or to the flow rate Low Output triggers when the flow rate is less than the setpoint The output will relax when the flow rate moves above the setpoint plus the hysteresis value High Output triggers when the flow rate is greater than the setpoint The output will relax when the flow rate drops below the setpoint plus the hysteresis value Frequency Output is a ...

Page 5: ... UP UP DOWN keys in sequence After entering the Key Code the display will show the first item in the selected menu Step 3 Scroll menu with UP or DOWN arrow keys Step 4 Press RIGHT ARROW key to select menu item to be edited The first display element will begin flashing Step 5 Press UP or DOWN keys to edit the flashing element RIGHT ARROW key advances the flashing element Step 6 Press ENTER key to s...

Page 6: ...sired mode of operation for the Open Collector output Options available are High Low volumetric Pulse or Frequency The signal may be disabled Off if not used In Low or High Mode the Open Collector output will be activated when the Flow rate reaches this value Be sure to modify this setting if you change the Flow Units The Open Collector output will be deactivated at Setpoint Hysteresis depending o...

Page 7: ...zer Lock On The Key Code must be entered to reset the resettable totalizer Adjust the minimum and maximum current output The display value represents the precise current output Adjustment limits 3 80 mA 4 00 mA 5 00 mA 19 00 mA 20 00 mA 21 00 mA Use this setting to match the system output to any external device Active HIGH This setting is used to turn a device pump valve ON at the setpoint Active ...

Page 8: ...e place to the right Increase Pulse volume setting Decrease pulse width setting Reduce system flow rate Enter K factor from 0 0001 to 99999 Change the hysteresis value Replace transmitter SIGNET Signet Scientific Company 3401 Aerojet Avenue El Monte CA 91731 2882 U S A Tel 626 571 2770 Fax 626 573 2057 For Worldwide Sales and Service visit our website gfsignet com Or call in the U S 800 854 4090 G...

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